?? sql_data.java
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package bean;import java.sql.*;public class sql_data { String sDBDriver = "sun.jdbc.odbc.JdbcOdbcDriver"; String sConnStr = "jdbc:odbc:TSR"; Connection conn = null; ResultSet rs = null; public sql_data() { try { Class.forName(sDBDriver);//加載驅動程序 } catch(java.lang.ClassNotFoundException e) { System.err.println("sql_data(): " + e.getMessage()); } } public void executeInsert(String sql) { try { conn = DriverManager.getConnection(sConnStr);//建立與數據庫的連接 Statement stmt = conn.createStatement();//創建Statement對象 stmt.executeUpdate(sql);//執行SQL語句 } catch(SQLException ex) { System.err.println("sql_data.executeUpdate:"+ex.getMessage()); } } public ResultSet executeQuery(String sql) { rs = null;//定義結果集 try { conn = DriverManager.getConnection(sConnStr); Statement stmt = conn.createStatement(); rs = stmt.executeQuery(sql); } catch(SQLException ex) { System.err.println("sql_data.executeQuery:"+ex.getMessage()); } return rs; } public void executeDelete(String sql) { try { conn = DriverManager.getConnection(sConnStr); Statement stmt = conn.createStatement(); stmt.executeUpdate(sql); } catch(SQLException ex) { System.err.println("sql_data.executeDelete:"+ex.getMessage()); } }}?? 快捷鍵說明
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